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What do I need to know about Fair Play on
What do I need to know about Fair Play on
Updated over a week ago

For all your fair play information, please go to:

What are the rules?

  • No chess programs or engines (e.g. Chessmaster, Fritz, Komodo, Houdini, Stockfish, Chessbase with any active UCI engine, etc.) can be used to analyze positions in ongoing games at any time.

  • In Daily Chess (turn-based games with several days per move), you may consult any resource which is not engine-based. This includes books, opening databases (including the Explorer) for standard and thematic games (though not their engine analyses). Tablebases are NOT allowed. You may not consult an engine, or another human, to provide an opinion on the opening database, tablebases, self-preparation or analysis that would relate to a particular game-in-progress on

  • In Live Chess, no outside assistance OF ANY KIND is permitted.

  • Fixing game results by arranging games, playing with multiple accounts or losing intentionally is also against the rules.

  • Do not get help from any other person, including parents, friends, coaches or another player.

  • Do not let anyone else play on your account! This is strictly against the rules!

  • Do not use anyone else's account.

  • Do not interfere with the gameplay of other members.

  • Suspecting your opponent of using outside help is not an excuse to do the same. If you suspect someone is cheating, report the player to

Common fair play mistakes:

  1. Using an engine in a rated game will get your account closed, even if the other player knows you’re doing it! This confusion happens more often than you might think. One scenario we have encountered is two friends who were trying to see which engine was stronger by playing engine moves in a game against each other.

  2. Using an opening book in Live - Whether it’s an online opening library, or a book sitting in your lap, if it’s showing you what move to play it could get your account closed!

  3. Using your own personal notes in Live - This one surprises most people, but it’s the same as using an opening book! If you wrote out all the possible moves for a certain opening, and reference them during a live game, this is considered cheating! A good rule to remember for live chess is to only use your own brain!

How do I report someone for breaking the Fair Play rules?

  • If you have reason to believe someone is referencing the illegal assistance of engine analysis, please see how to report it here. Our Foul Play Detection Staff will conduct a thorough investigation, gathering statistics and reports on said user, keeping all findings confidential, taking appropriate action against the reported user if/when a concrete assessment has been made.

  • Please do not discuss your suspicions in the forums!

  • Please do not make public accusations on a users wall or in their notes!

  • Please do not make public accusations of any username in public chat in Live Chess (while observing a game or playing a game)!

  • Any of the above described public accusations / actions against a member may lead to your own account being restricted, regardless of what is found against the accused.

How does detect foul play?

  • Part of our analysis involves comparing human moves to computer moves and looking at the statistical significance of said moves.

  • To remain effective, other aspects of our detection methods are confidential.

How often does catch Fair Play abusers?

  • We work hard to keep a safe and positive community for chess players around the world, and are sad whenever any account is closed. That said, the process of investigating the fair play of our members is a never ending one!

  • employs more than 20 full time salary employees dedicated to the research, prevention, and ultimately, the closure of accounts found to have accessed illegal assistance during their chess games. Our team is constantly going through the games of our top players, submitting those games into our "Fair Play Detection System", and evaluating clean play vs non-clean play.

  • We close over 1000 accounts each week (including those of premium members, and even Titled members).

What happens to a player who is found to have violated the rules of Fair Play on

  • We close their account immediately; all games in progress are awarded to their opponents.

  • In extreme cases, we do restore points going back for the last 100 games or the last three months (after that point the result of any individual game becomes statistically insignificant).

  • In some cases, we allow the opening of a new account; however, never is a user convicted of Fair Play abuse allowed to open the same account again.

What should I do if my opponent accuses me of Fair Play violations?

If I reported someone for Fair Play abuse why hasn't their account been closed?

  • We appreciate you reporting your suspicions, but ultimately will decide and bear all responsibilities of our members and their play on our site. If we have not closed their account then the evidence is not conclusive.

You closed the account of someone I know - I'm sure they were innocent of abuse!

  • Sorry that you are upset. Unfortunately, people do make mistakes - sometimes even really nice people. Again, we only close accounts when we are absolutely certain of our findings and have gathered enough statistics that we would stand by under public scrutiny and a court of law.

  • No accounts are ever closed "on suspicion".

Can someone appeal if their account is closed?

  • We are happy to listen to your appeal! Complete the appeals form linked to in your closure notice and the Fair Play team will review your case.

  • However, we ask you to remember that is a private company, it maintains the right to close the accounts of anyone we deem to have broken site rules, acted unfairly to other members or behaved in a way that hurt the site experience for other members.

  • Further, it should be clear by all logical, reasonable accounts (as well as by all smart business practices) that we would never have any reason to close the account of a user if we were not SURE, beyond all reasonable doubt, that they had broken rules.

What does think about Fair Play abuse?

  • Using unfair advantages against someone who thinks you are playing fairly is a terrible act.

  • Our policies are clear & strict; they are also faithfully enforced.

  • We feel we are extremely effective in identifying and dealing with all Fair Play abusers.

Note also that, to keep our regular forums free of a subject that tends to cause unnecessary anxiety, we have created a special group forum for discussions of cheating in online chess. Please restrict your comments on the subject to that group forum. Thank you!

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